Short and well-written story (20 mn, no branching paths), which cleverly puts Mokou and Akyuu's "immortalities" next to eachother.
The prod value's amazing too for 72 hours. There 6+ Touhou arranges and high quality portrait and backgrounds here.
I fully recommend you don't skip the game just because it's a VN (you know who you are :) )
P.S.: I put 6 stars in Audio. Oops.